问一个语法.i won't interrupt you,unless something unexpected happens.请问这句话后面两个单词为什么一个要加ed一个要加s?

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/09 11:40:19
问一个语法.i won't interrupt you,unless something unexpected happens.请问这句话后面两个单词为什么一个要加ed一个要加s?

问一个语法.i won't interrupt you,unless something unexpected happens.请问这句话后面两个单词为什么一个要加ed一个要加s?
问一个语法.
i won't interrupt you,unless something unexpected happens.
请问这句话后面两个单词为什么一个要加ed一个要加s?

问一个语法.i won't interrupt you,unless something unexpected happens.请问这句话后面两个单词为什么一个要加ed一个要加s?
unexpected 无法预料的,是不定代词something的后置定语,
happens是条件状语从句里的谓语动词,主语是something,谓语动词当然要用单数形式,所以加s.